On screen
Cast
19 credited performers
Robert Forster
Prof. Paul Corwin / The Clone
Adrienne Barbeau
Margaret Corwin
Ray Milland
Prof. Meredith
David Sheiner
Prof. Sidney Hillstrom
John Lehne
Lt. Merholz
Artwork unavailable
Denise DuBarry
Ann Sweeney
Jack De Mave
Roger
Artwork unavailable
Thomas Bellin
Ed Linnick
Artwork unavailable
Heather Hobbs
Jenny
Eddie Quillan
Watchman
Artwork unavailable
Raye Sheffield
Clone
Artwork unavailable
Russell Shannon
Guard
James Nolan
Dr. Tapler
Artwork unavailable
Madeleine Shaner
Audrey Linnick
Johnny Hock
1st Skater
Artwork unavailable
Tom Elliott
2nd Skater
Artwork unavailable
Thomas McGowan
Andrew Pauletta (uncredited)
Artwork unavailable
John Herman Shaner
Fire Captain (uncredited)
Artwork unavailable
D.A. Young
Lance (uncredited)